Clock.



J. F. DUNN.

CLOCK. APPUCATIUN FILED AUG 1,1914.

1,270,706. PuTmMIJImv 2.3, 1918 SSHEETS SHEkT Z.

J. F DUNN.

CLOCK.

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Patented June 25, 1918.

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.rosnrn r. DUNN, or NEW YORK, 1v. Y.

CLOCK.

Specification of Letters Patent. I Patented June 25, 1918.

Application filed August 7, 1914. Serial No. 855,610.

To all whom it may concern:

Be it known that I, Josneil F. DUNN, a citizen. of the United States,residing at New York city, in. the county of New York and State of NewYork, have in vented neW and useful Improvements in Clocks, of which thefollowing is a specification.

This invention. relates to improvements in clocks and more particularlyto mechanism for predetermining the release of the alarm of alarmclocks.

It is the object of this invention to con struct the releasing mechanismof an alarm clock so that it will operate to release the alarm on anexact predetermined hour and minute. It is also an object of thisinvention to provide an addition to the usual alarm hour indicator onthe alarm dial an alarm minute indicator which travels on the time,-dial correspondingly with the alarm hour indicator on its own dial andits position willindicate the exact minute the mechanism will releasethe alarm. In the usual alarm clock the hours on the alarm'dial areindicated in the same manner and correspond to the hour designatingnumerals upon the clock face but in setting the alarm the indicatortravels counter clockwise upon its dial. It is also an object of thisinvention to construct the alarm minute indicator to travel clock-wiseupon the clock dial so that there will be no confusion in setting thealarm.

The advantages of this invention are obvious. The usual alarm clock isprovided with, a small alarm indicating dial over which travels, in a.counter clock-wise direction a single indicator in the form of This dialis divided into hours, quarters, and halves, so that the exact minutethe alarm will be released is a matter of conjecture when set betweenthe divisionson. the dial. By the construction contemplated in thisinvention the exact minuteof. release may be determined.

further advantage is the arrangement wherebythe alarm minute indicatortravels clock-wise about the clock face over the hour and .minutenumerals thereon, as confus on arises in calculating minutes in acounter clock-wise moving indicator.

1 g i-le the preferred formsof this invention are illustrated upon theaccompanying sheets of drawing, yet it is to be understood that minordetail changes may be made without departing from the scope thereof.

Figure 1 is a view in front elevation of an alarm clock embodying thisinvention.

Fig. 2 is a diagrammatical view in front elevation illustrating thetrain of gears between the alarm hour and minute indicators.

Fig. 3 is an enlarged top plan view of the Fig. 2 with parts broken awayand the clock mechanism omitted.

Fig. 4 is a. view in side elevation of Fig. 2, looking from the right.

Fig. 5 is a similar vow taken from the left.

Fig. 6 is a view clock illustrating a invention.

Fig. 7 is a similar view of another modification with parts broken away.

Fig. 8 is an enlarged view of the construction of Fig. 7 in sideelevation looking from the right, with parts broken away and the clockmechanism omitted.

In all forms illustrated the usual clock mechanism is omitted as itforms no part of this invention.

In Figs. 1. to 6, inclusive, the clock face, hour and minute hands,alarm dial, alarm indicator and mechanism, as well the means of settinthe clock hands and alarm indicators are 0 the usual construction. In

in front elevation ofda modified form of this this form an alarm minuteindicator 1, preferably in the form of a finger or arm of differentcolor from the hour and minute hands of the clock, is secured on theouter side of the clock face upon a sleeve 2 loosely mounted upon thehour hand sleeve, passing through the clock face and is provided with apinion 3 at the innerside thereof. The disk 4 on the alarm hourindicator spindle 5 which carries the alarm release key 6 is providedwith a gear wheel 7 which meshes with a pinion 8 on the arbor 9 of theusual transmission gear to the alarm releasing sleeve 10. This pinion 8is provided with a gear wheel 11 meshing with the pinion 310i the alarmminute indicator, and the relation of the pinion and gears 3, 11, 8, and7 is such that the alarm minute indicator 1 will make one completerevolution during the movement of the alarm indicator 12 through onehourdivision on the alarm dial 13.

As illustrated on Fig. 1 the alarm is set for three-forty'five and acontinued move-- ment of the alarm setting mechanism will cause thealarm minute indicator to travel counter clock-Wise over the time dialover the minute divisions approaching the hour of three as'the alarmhour indicator passes over the corresponding divisions on the alarm dialand the motion of both indicators will continue in this manner until edesired hour and minute for the re ass of the'alarm has been reached.

In this form the numerals on both time and alarm dials are arranged inthe same relation but, as both the alarm hour and minute indicatorsrevolve in a counter clock- Wise direction, the reading on the alarmdial is in a reverse direction, for example, in Fig.1 the hour indicatoris set at threeforty-five and passes from there through three-thirty andthree-fifteen to three oclock and so on, and as the movement of thealarm minute hand is the same as the alarm hour hand the minutes areread directly upon the time dial, for instance, the position of thealarm minute indicator on ig. 1 indicates three-forty-fivc the same asif the time minute hand was in this position.

A spring 14 may be secured upon the inner side of the clock face to bearupon the alarmminute indicator pinion 3 to cause it to move evenly andretain its position when at rest.

In the form above described both the alarm hour and minute indicatorsmove about the upon the alarm mechanism spindle.

time and alarm dials in a counter clock- Wise direction which may beconfusing to one not familiar with this operation and manner of reading.A construction is illustlfated on Fig. 6 by which the alarm minuteindicator 1 moves clock-wise about the clock dial-While the alarmindicator l2 moves counter clock-wise about the alarm dial in the usualmanner. This is accomplished by constructing the alarm minute indicatorpinion 3' to'mesh with the gear 7 carried y constructing thepinion 3 andgearwheel 7 in proper proportions the alarm minute indicator wildesignate the exact minute upon the time dial after the hour designatedupon the alarm dial that the alarm will b released. The osition of thealarm indicators on Fig. 6 indicates that the alarm will be released atthree-forty-five. I Another manner of carrying out this invention; whichcontemplates essentially the providing of an alarm minute indicatormovng in conjunction with the alarm hour indicatonis illustrated inFigs. 7 andS in which hothathe alarm indicators are arranged to travelupon the alarm dial and are read in the same manner as in theconstruction illustrated in Fig. 1. This isaccomplished by mounting apinion 15 upon the key carrying disk of the alarm spindle 5 meshing witha gear Wheel 16 loosely mounted upon the arbor 9 of the alarmtransmission train of gears. This ear wheel is provided with a pinion 17w ich in turn meshes with a gear wheel 18 carried upon a sleeve 19loosely mounted upon the alarm setting spindle 5". This sleeve 19 passesthrough the clock face and carries on the outer side the alarm hourindicator 12", the alarm minute indicator 1 being carried upon thespindle 5". The pinions and gear wheels 15, 16, 17, and 18 are soarranged and proportioned that upon the passage of the alarm hourindicator through one hour division on the alarm dial 13 the alarmminute indicator makes a complete revolution of the dial.

Upon this alarm dial the alarm indicators l. and 12 move in thesame'direction, counter-clockwise.

What I claim is:

1. In a device of the character described including an alarm setting andreleasing mechanism including an alarm transmission gearing and arborhaving an alarm setting spindle carrying an hour indicator upon the arelease key carrying disk upon the alarm transmission gearing, wherebythe indicators are moved concurrently to cause the minute indicator tomake a com plete revolution as the hour indicator moves through one hourdivision.

2. The combination of an alarm mechanism, a time mechanism having timeindicating devices and means for releasing said alarm mechanism, meansfor setting said alarm mechanism relative to the time mechanism, andindicating" devices which show the setting of'the alarmmechanism,comprising an hour indicator, a separate minute indicator, and gearingconnecting said hour and minute'indicators whereby they are movedtogether at different speeds res )QCtlVBly in the pro ortion of one totwelve i l the setting of sai alarm mechanism{ 3. Theicombinatiow of analarm mechanism, a time mechanism having hour and minute hands alarmmechanism, means for setting said alarm mechanism"relative to the timemechanism,'and indicating devices which show the setting of the alarmmec anism, comprising an alarm hour ban a se arate alarm minute hand,and gearing d rectly connecting said alarm hour and minute and means forreleasing said halide to move t rgether at the different causing the twotonlove concurrently to inspeeds of one ito \vnlve respectively in the(licate the hour and minute at whlch the setting of the alarm mechanism.alarm will be released.

4. In an alarm clock, an alarm setting JOSEPH F. DUNN. 5 and releasingmechanism, an alarm hour iu- W itnesses:

dicator, an alarm minute indicator, and A M. HAYES,

gearing connecting the said indicators for OSCAR M. BATE.

